|SOME FREQUENTLY ASKED QUESTIONS
ABOUT BACKFLOW SYSTEMS
is a backflow?
Backflow is a water condition that you want to avoid at any cost.
Simply put, backflow occurs any time the flow in your water system
For example, occasionally a car will strike a fire
hydrant on a street. Water will gush out of the hydrant at full
water pressure, causing a huge drop of water pressure at all buildings
on the block. With this drop of pressure, the direction of water
flowing through pipes can actually reverse. Whenever flow reverses,
there is a strong likelihood of fresh water contamination.
With this in mind, you clearly want to avoid mixing
fresh water with non-potable water. This is what a backflow valve
is designed to prevent.
is the purpose of a backflow prevention valve?
Anytime you use water for industrial purposes you're in need of
a backflow prevention valve.
Imagine, for example, that you own a car wash.
One day, the water pressure supplied to your property may
drop unexpectedly. When this happens, the water flow to
the soap water tank could reverse.
When water pressure is restored, the local city water can
be contaminated by the soapy water from the tank. Every
building on your street could then have soapy water flowing
out of their taps.
Obviously, in industry things could get even more
extreme. Facilities that process acids, toxic chemicals, or sewage
need to prevent a reversal of water flow at any cost.
This is where a backflow valve comes in. During
a time of water pressure fluctuation, the valve will prevent your
facility's materials from flowing into the water supply.
do I know if I need to install a backflow valve?
you need a backflow valve, you will usually be notified by
the city or county's water or health department. Most commercial
businesses will need backflow protection. Even homes may need
backflow devices installed, particularly when they are located
in hilly areas or areas with volatile water pressure conditions.
install a backflow valve?
|The building owner can do
it himself or herself providing all laws and regulations
are followed. Or, the owner can hire a licensed backflow
installer with a plumbing certification license. For
the job to be done legally, the person doing the installation
must be a licensed plumber and posses certification
in backflow installation
much does a backflow valve cost?
Backflow valves range is size from ¾ of an inch (for homes)
to 10 inches (for large facilities). Valve prices vary according
and inspection if required?
In most cases, backflow valves must be tested and certified annually
or more often, as determined by your city, county of state's regulation.
Most valves can be tested in an hour or less.
After completion of test, the owner of the backflow
valve is given a certified test report. Most valves pass inspection.
But if the valve fails, there is a legally enforced time limit
in which the valve must be repaired or replaced (often around
How can WC Davis,
Inc. respond to my backflow needs?
We are licensed in all the areas of backflow installation, certification,
We hope that you will contact us for your
needs. But regardless of whether we get your business, we want
to strongly recommend that whoever handles your backflow requirements
is a licensed plumber with backflow certification. Many people
who work in the backflow business do not have an adequate understanding
of plumbing issues. Oftentimes, these people cannot respond effectively
to problems that may arise when backflow valves are installed
or worked on.